ESP8266 Community Forum

- Mon Jun 19, 2017 12:31 pm #67355 Hello everybody,

I am using a Hx711 module to measure weight.

It is connected to the D7(Clock) and the D8(Data) pins of the nodeMCU.

I am using the nodemcu power supply for the Hx711 module.

If I want to upload the sketch to the nodeMCU I have to unplug the power of the Hx711. I would like to know what happen?

Another issue is that, after upload the sketch I power on the hx711 and all works fine, but if i reset the nodeMCU, it does not work.

I hope you can help me.

Thanks.

- Mon Jun 19, 2017 12:43 pm #67356 D8 is the GPIO15, which need to be pulled down at power up or reset.

- Mon Jun 19, 2017 12:49 pm #67358 Thanks martinayotte,

Which pins do you suggest for that connection?

Thanks.

- Mon Jun 19, 2017 3:30 pm #67366 If you didn't already used it, you can use GPIO4/GPIO5 for example (D2/D1).